TINC Interface MAC Address

[mediahost]

Hi,

I have a TINC setup on two OPNSense appliances, I have successfuly initiated a connection between the two sites but I noticed that the one device has a MAC address of 00:00:00:00:00:00 assigned to the TINC interface. I can make up a MAC address and assign it in the interface settings but I would rather try and resolve why the TINC interface doesnt assign a MAC in the first place.

Any suggestions on this, I have removed/unistalled TINC completely and the rebooted the appliance, then re-configured but the MAC gets re-assigned as 00:00:00:00:00:00

Thanks.